@Peela Vinod Thank you for clarifying your need. Azure WAF can be deployed with Azure Application Gateway, Azure Front Door, and Azure Content Delivery Network (CDN) service from Microsoft. Are you using any of these services currently?
If so, here is a web post that explains different use cases for Azure WAF which also includes allow/block lists based on remote IP addresses which may be implemented for your need.
If you don't use Application Gateway, Azure Front Door, or Azure Content Delivery Network (CDN) services and only want to use these restrictions for your VMs on Azure, then you may be able to implement the same using Azure Firewall.Hope this helps.
Please let us know if you have any further questions and we will be glad to assist you further. Thank you!
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